一：环境配置
VLC播放器依赖libvlc和libvlccore两个动态链接库文件以及一个plugins插件包，需要将其放置在debug目录下。依赖文件可以在LVC播放器的安装目录下找到。
二：导入VLC提供的方法
[SuppressUnmanagedCodeSecurity]
internal static class SafeNativeMethods
{
// 创建一个libvlc实例，它是引用计数的
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern libvlc_instance_t libvlc_new(int argc, IntPtr argv);
// 释放libvlc实例
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_release(libvlc_instance_t libvlc_instance);
//获取libvlc的版本
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern String libvlc_get_version();
//从视频来源(例如http、rtsp)构建一个libvlc_meida
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern libvlc_media_t libvlc_media_new_location(libvlc_instance_t libvlc_instance, IntPtr path);
//从本地文件路径构建一个libvlc_media
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern libvlc_media_t libvlc_media_new_path(libvlc_instance_t libvlc_instance, IntPtr path);
//释放libvlc_media
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_media_release(libvlc_media_t libvlc_media_inst);
// 创建一个空的播放器
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern libvlc_media_player_t libvlc_media_player_new(libvlc_instance_t libvlc_instance);
//从libvlc_media构建播放器
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern libvlc_media_player_t libvlc_media_player_new_from_media(libvlc_media_t libvlc_media);
//释放播放器资源
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_media_player_release(libvlc_media_player_t libvlc_mediaplayer);
// 将视频(libvlc_media)绑定到播放器上
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_media_player_set_media(libvlc_media_player_t libvlc_media_player, libvlc_media_t libvlc_media);
// 设置图像输出的窗口
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_media_player_set_hwnd(libvlc_media_player_t libvlc_mediaplayer, Int32 drawable);
//播放器播放
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern int libvlc_media_player_play(libvlc_media_player_t libvlc_mediaplayer);
//播放器暂停
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_media_player_pause(libvlc_media_player_t libvlc_mediaplayer);
//播放器停止
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_media_player_stop(libvlc_media_player_t libvlc_mediaplayer);
// 解析视频资源的媒体信息(如时长等)
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_media_parse(libvlc_media_t libvlc_media);
// 返回视频的时长(必须先调用libvlc_media_parse之后，该函数才会生效)
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern Int64 libvlc_media_get_duration(libvlc_media_t libvlc_media);
// 当前播放时间
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern Int64 libvlc_media_player_get_time(libvlc_media_player_t libvlc_mediaplayer);
// 设置播放时间
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_media_player_set_time(libvlc_media_player_t libvlc_mediaplayer, Int64 time);
// 获取音量
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern int libvlc_audio_get_volume(libvlc_media_player_t libvlc_media_player);
//设置音量
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_audio_set_volume(libvlc_media_player_t libvlc_media_player, int volume);
// 设置全屏
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_set_fullscreen(libvlc_media_player_t libvlc_media_player, int isFullScreen);
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern int libvlc_get_fullscreen(libvlc_media_player_t libvlc_media_player);
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern void libvlc_toggle_fullscreen(libvlc_media_player_t libvlc_media_player);
//判断播放时是否在播放
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern bool libvlc_media_player_is_playing(libvlc_media_player_t libvlc_media_player);
//判断播放时是否能够Seek
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern bool libvlc_media_player_is_seekable(libvlc_media_player_t libvlc_media_player);
//判断播放时是否能够Pause
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern bool libvlc_media_player_can_pause(libvlc_media_player_t libvlc_media_player);
//判断播放器是否可以播放
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern int libvlc_media_player_will_play(libvlc_media_player_t libvlc_media_player);
//进行快照
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern int libvlc_video_take_snapshot(libvlc_media_player_t libvlc_media_player, int num, char[] filepath, int i_width, int i_height);
//获取Media信息
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern libvlc_media_t libvlc_media_player_get_media(libvlc_media_player_t libvlc_media_player);
//获取媒体信息
[DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
internal static extern int libvlc_media_get_stats(libvlc_media_t libvlc_media, ref libvlc_media_stats_t lib_vlc_media_stats);
}
三：对导入的资源进行一层包装
/// <summary>
/// 创建VLC播放资源索引
/// </summary>
/// <param name="arguments"></param>
/// <returns></returns>
private libvlc_instance_t Create_Media_Instance()
{
libvlc_instance_t libvlc_instance = IntPtr.Zero;
IntPtr argvPtr = IntPtr.Zero;
try
{
if (arguments.Length == 0 ||
arguments == null)
{
return IntPtr.Zero;
}
//将string数组转换为指针
argvPtr = StrToIntPtr(arguments);
if (argvPtr == null || argvPtr == IntPtr.Zero)
{
return IntPtr.Zero;
}
//设置启动参数
libvlc_instance = SafeNativeMethods.libvlc_new(arguments.Length, argvPtr);
if (libvlc_instance == null || libvlc_instance == IntPtr.Zero)
{
return IntPtr.Zero;
}
return libvlc_instance;
}
catch
{
return IntPtr.Zero;
}
}
/// <summary>
/// 释放VLC播放资源索引
/// </summary>
/// <param name="libvlc_instance">VLC 全局变量</param>
private void Release_Media_Instance(libvlc_instance_t libvlc_instance)
{
try
{
if (libvlc_instance != IntPtr.Zero ||
libvlc_instance != null)
{
SafeNativeMethods.libvlc_release(libvlc_instance);
}
libvlc_instance = IntPtr.Zero;
}
catch (Exception)
{
libvlc_instance = IntPtr.Zero;
}
}
/// <summary>
/// 创建VLC播放器
/// </summary>
/// <param name="libvlc_instance">VLC 全局变量</param>
/// <param name="handle">VLC MediaPlayer需要绑定显示的窗体句柄</param>
/// <returns></returns>
private libvlc_media_player_t Create_MediaPlayer(libvlc_instance_t libvlc_instance, IntPtr handle)
{
libvlc_media_player_t libvlc_media_player = IntPtr.Zero;
try
{
if (libvlc_instance == IntPtr.Zero ||
libvlc_instance == null ||
handle == IntPtr.Zero ||
handle == null)
{
return IntPtr.Zero;
}
//创建播放器
libvlc_media_player = SafeNativeMethods.libvlc_media_player_new(libvlc_instance);
if (libvlc_media_player == null || libvlc_media_player == IntPtr.Zero)
{
return IntPtr.Zero;
}
//设置播放窗口
SafeNativeMethods.libvlc_media_player_set_hwnd(libvlc_media_player, (int)handle);
return libvlc_media_player;
}
catch
{
SafeNativeMethods.libvlc_media_player_release(libvlc_media_player);
return IntPtr.Zero;
}
}
/// <summary>
/// 释放媒体播放器
/// </summary>
/// <param name="libvlc_media_player">VLC MediaPlayer变量</param>
private void Release_MediaPlayer(libvlc_media_player_t libvlc_media_player)
{
try
{
if (libvlc_media_player != IntPtr.Zero ||
libvlc_media_player != null)
{
if (SafeNativeMethods.libvlc_media_player_is_playing(libvlc_media_player))
{
SafeNativeMethods.libvlc_media_player_stop(libvlc_media_player);
}
SafeNativeMethods.libvlc_media_player_release(libvlc_media_player);
}
libvlc_media_player = IntPtr.Zero;
}
catch (Exception)
{
libvlc_media_player = IntPtr.Zero;
}
}
/// <summary>
/// 播放网络媒体
/// </summary>
/// <param name="libvlc_instance">VLC 全局变量</param>
/// <param name="libvlc_media_player">VLC MediaPlayer变量</param>
/// <param name="url">网络视频URL，支持http、rtp、udp等格式的URL播放</param>
/// <returns></returns>
private bool NetWork_Media_Play(libvlc_instance_t libvlc_instance, libvlc_media_player_t libvlc_media_player, string url)
{
IntPtr pMrl = IntPtr.Zero;
libvlc_media_t libvlc_media = IntPtr.Zero;
try
{
if (url == null ||
libvlc_instance == IntPtr.Zero ||
libvlc_instance == null ||
libvlc_media_player == IntPtr.Zero ||
libvlc_media_player == null)
{
return false;
}
pMrl = StrToIntPtr(url);
if (pMrl == null || pMrl == IntPtr.Zero)
{
return false;
}
//播放网络文件
libvlc_media = SafeNativeMethods.libvlc_media_new_location(libvlc_instance, pMrl);
if (libvlc_media == null || libvlc_media == IntPtr.Zero)
{
return false;
}
//将Media绑定到播放器上
SafeNativeMethods.libvlc_media_player_set_media(libvlc_media_player, libvlc_media);
//释放libvlc_media资源
SafeNativeMethods.libvlc_media_release(libvlc_media);
libvlc_media = IntPtr.Zero;
if (0 != SafeNativeMethods.libvlc_media_player_play(libvlc_media_player))
{
return false;
}
//休眠指定时间
Thread.Sleep(500);
return true;
}
catch (Exception)
{
//释放libvlc_media资源
if (libvlc_media != IntPtr.Zero)
{
SafeNativeMethods.libvlc_media_release(libvlc_media);
}
libvlc_media = IntPtr.Zero;
return false;
}
}
/// <summary>
/// 播放本地视频
/// </summary>
/// <param name="libvlc_instance"></param>
/// <param name="libvlc_media_player"></param>
/// <param name="url"></param>
/// <returns></returns>
private bool Local_Media_Play(libvlc_instance_t libvlc_instance, libvlc_media_player_t libvlc_media_player, string url)
{
IntPtr pMrl = IntPtr.Zero;
libvlc_media_t libvlc_media = IntPtr.Zero;
try
{
if (url == null ||
libvlc_instance == IntPtr.Zero ||
libvlc_instance == null ||
libvlc_media_player == IntPtr.Zero ||
libvlc_media_player == null)
{
return false;
}
pMrl = StrToIntPtr(url);
if (pMrl == null || pMrl == IntPtr.Zero)
{
return false;
}
//播放本地视频
libvlc_media = SafeNativeMethods.libvlc_media_new_path(libvlc_instance, pMrl);
if (libvlc_media == null || libvlc_media == IntPtr.Zero)
{
return false;
}
//将Media绑定到播放器上
SafeNativeMethods.libvlc_media_player_set_media(libvlc_media_player, libvlc_media);
//释放libvlc_media资源
SafeNativeMethods.libvlc_media_release(libvlc_media);
libvlc_media = IntPtr.Zero;
if (0 != SafeNativeMethods.libvlc_media_player_play(libvlc_media_player))
{
return false;
}
//休眠指定时间
Thread.Sleep(500);
return true;
}
catch (Exception)
{
//释放libvlc_media资源
if (libvlc_media != IntPtr.Zero)
{
SafeNativeMethods.libvlc_media_release(libvlc_media);
}
libvlc_media = IntPtr.Zero;
return false;
}
}
/// <summary>
/// 暂停或恢复视频
/// </summary>
/// <param name="libvlc_media_player">VLC MediaPlayer变量</param>
/// <returns></returns>
private bool MediaPlayer_Pause(libvlc_media_player_t libvlc_media_player)
{
try
{
if (libvlc_media_player == IntPtr.Zero ||
libvlc_media_player == null)
{
return false;
}
if (SafeNativeMethods.libvlc_media_player_can_pause(libvlc_media_player))
{
SafeNativeMethods.libvlc_media_player_pause(libvlc_media_player);
return true;
}
else
{
return false;
}
}
catch (Exception)
{
return false;
}
}
/// <summary>
/// 停止播放
/// </summary>
/// <param name="libvlc_media_player">VLC MediaPlayer变量</param>
/// <returns></returns>
private bool MediaPlayer_Stop(libvlc_media_player_t libvlc_media_player)
{
try
{
if (libvlc_media_player == IntPtr.Zero ||
libvlc_media_player == null)
{
return false;
}
SafeNativeMethods.libvlc_media_player_stop(libvlc_media_player);
return true;
}
catch (Exception)
{
return false;
}
}
/// <summary>
/// VLC MediaPlayer是否在播放
/// </summary>
/// <param name="libvlc_media_player">VLC MediaPlayer变量</param>
/// <returns></returns>
private bool MediaPlayer_IsPlaying(libvlc_media_player_t libvlc_media_player)
{
try
{
if (libvlc_media_player == IntPtr.Zero ||
libvlc_media_player == null)
{
return false;
}
return SafeNativeMethods.libvlc_media_player_is_playing(libvlc_media_player);
}
catch (Exception)
{
return false;
}
}
/// <summary>
/// 录制快照
/// </summary>
/// <param name="libvlc_media_player">VLC MediaPlayer变量</param>
/// <param name="path">快照要存放的路径</param>
/// <param name="name">快照保存的文件名称</param>
/// <returns></returns>
private bool TakeSnapShot(libvlc_media_player_t libvlc_media_player, string path, string name)
{
try
{
string snap_shot_path = null;
if (libvlc_media_player == IntPtr.Zero ||
libvlc_media_player == null)
{
return false;
}
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
snap_shot_path = path + "\\" + name;
if (0 == SafeNativeMethods.libvlc_video_take_snapshot(libvlc_media_player, 0, snap_shot_path.ToCharArray(), 0, 0))
{
return true;
}
else
{
return false;
}
}
catch (Exception)
{
return false;
}
}
/// <summary>
/// 获取信息
/// </summary>
/// <param name="libvlc_media_player"></param>
/// <returns></returns>
private bool GetMedia(libvlc_media_player_t libvlc_media_player)
{
libvlc_media_t media = IntPtr.Zero;
try
{
if (libvlc_media_player == IntPtr.Zero ||
libvlc_media_player == null)
{
return false;
}
media = SafeNativeMethods.libvlc_media_player_get_media(libvlc_media_player);
if (media == IntPtr.Zero || media == null)
{
return false;
}
else
{
return true;
}
}
catch (Exception)
{
return false;
}
}
/// <summary>
/// 获取已经显示的图片数
/// </summary>
/// <param name="libvlc_media_player"></param>
/// <returns></returns>
private int GetDisplayedPictures(libvlc_media_player_t libvlc_media_player)
{
libvlc_media_t media = IntPtr.Zero;
libvlc_media_stats_t media_stats = new libvlc_media_stats_t();
try
{
if (libvlc_media_player == IntPtr.Zero ||
libvlc_media_player == null)
{
return 0;
}
media = SafeNativeMethods.libvlc_media_player_get_media(libvlc_media_player);
if (media == IntPtr.Zero || media == null)
{
return 0;
}
if (1 == SafeNativeMethods.libvlc_media_get_stats(media, ref media_stats))
{
return media_stats.i_displayed_pictures;
}
else
{
return 0;
}
}
catch (Exception)
{
return 0;
}
}
/// <summary>
/// 设置全屏
/// </summary>
/// <param name="libvlc_media_player"></param>
/// <param name="isFullScreen"></param>
private bool SetFullScreen(libvlc_media_player_t libvlc_media_player, int isFullScreen)
{
try
{
if (libvlc_media_player == IntPtr.Zero ||
libvlc_media_player == null)
{
return false;
}
SafeNativeMethods.libvlc_set_fullscreen(libvlc_media_player, isFullScreen);
return true;
}
catch (Exception)
{
return false;
}
}
//将string []转换为IntPtr
private static IntPtr StrToIntPtr(string[] args)
{
try
{
IntPtr ip_args = IntPtr.Zero;
PointerToArrayOfPointerHelper argv = new PointerToArrayOfPointerHelper();
argv.pointers = new IntPtr[11];
for (int i = 0; i < args.Length; i++)
{
argv.pointers[i] = Marshal.StringToHGlobalAnsi(args[i]);
}
int size = Marshal.SizeOf(typeof(PointerToArrayOfPointerHelper));
ip_args = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(argv, ip_args, false);
return ip_args;
}
catch (Exception)
{
return IntPtr.Zero;
}
}
//将string转换为IntPtr
private static IntPtr StrToIntPtr(string url)
{
try
{
if (string.IsNullOrEmpty(url))
{
return IntPtr.Zero;
}
IntPtr pMrl = IntPtr.Zero;
byte[] bytes = Encoding.UTF8.GetBytes(url);
pMrl = Marshal.AllocHGlobal(bytes.Length + 1);
Marshal.Copy(bytes, 0, pMrl, bytes.Length);
Marshal.WriteByte(pMrl, bytes.Length, 0);
return pMrl;
}
catch (Exception)
{
return IntPtr.Zero;
}
}
四：提供公共方法供外部调用
/// <summary>
/// 播放网络视频流
/// </summary>
/// <param name="url">url地址</param>
/// <param name="handle">显示控件句柄</param>
/// <returns>true：播放成功；false：播放失败</returns>
public bool playUrl(string url,IntPtr handle)
{
lit = Create_Media_Instance();
lmpt = Create_MediaPlayer(lit, handle);
return NetWork_Media_Play(lit, lmpt, url);
}
/// <summary>
/// 播放本地视频
/// </summary>
/// <param name="path">视频路径</param>
/// <param name="handle">显示控件句柄</param>
/// <returns>true：播放成功；false：播放失败</returns>
public bool playLocalVideo(string path, IntPtr handle)
{
lit = Create_Media_Instance();
lmpt = Create_MediaPlayer(lit, handle);
return Local_Media_Play(lit, lmpt, path);
}
/// <summary>
/// 释放VLC资源
/// </summary>
/// <returns>true：释放；false：失败</returns>
public bool release()
{
try
{
MediaPlayer_Stop(lmpt);
Release_Media_Instance(lit);
Release_MediaPlayer(lmpt);
return true;
}
catch(Exception ex)
{
return false;
}
}
/// <summary>
/// 是否正在播放
/// </summary>
/// <returns></returns>
public bool IsPlaying()
{
return MediaPlayer_IsPlaying(lmpt);
}
/// <summary>
/// 停止播放
/// </summary>
public void Stop()
{
MediaPlayer_Stop(lmpt);
}
五：附录
详细Demo以及依赖库上传至百度云盘，附链接：
链接：https://pan.baidu.com/s/15MFs6PZWbmtFOA29VOwn4w 密码：qj33